Python Functions Overview

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What is a function in programming?

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A function is a programming block of codes used to perform a single, related, specific task.

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What are parameters in a function?

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Parameters are data passed into a function.

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What does it mean that Python treats functions as first-class members?

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It means functions in Python can be assigned to variables, stored in collections, or passed as arguments.

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List some advantages of using functions.

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1. Reducing duplication of code 2. Decomposing complex problems into simpler pieces 3. Improving clarity of the code 4. Reuse of code 5. Information hiding

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What are the three categories of functions in Python?

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1. Built-in functions 2. Functions defined in modules 3. User-defined functions

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What are built-in functions in Python?

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Functions whose functionality is predefined in Python, such as len(), type(), int(), input().

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What are user-defined functions?

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Functions that allow users to write unique logic defined by the user.

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What is the structure of a function in Python?

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A function consists of a header, parameters, a colon, an optional docstring, and a body of statements.

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What is the purpose of the 'def' keyword in Python?

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It marks the start of the function header.

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What is a function header?

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The header specifies the name of the function and the names of its parameters.